1,721,027 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Cosmology Using Photometric Samples of Type Ia Supernovae: The First Joint Photometric Light Curve Analysis
No full textOver the last twenty five years, type Ia supernova (SNIa) have been a crucial cosmological probe, responsible for the discovery of the accelerating expansion of the universe. But with the dawn of the next generation of telescopes and SNIa samples, new methods and techniques are needed to increase precision and handle ever-smaller systematics.The Dark Energy Survey (DES) Supernova program has recently completed, and will be the first program whose success relies on the analysis of a sample in which we do not know the typing of the supernova. These `photometric samples' are a significant switch from spectroscopic samples, in which every SNIa used in the analysis is spectroscopically identified. The motivation for this switch is the opportunity to have times larger samples than what would be feasible with spectroscopic identification; however, these analyses are replete with new and untested sources of systematic uncertainty. One less obvious, but equally significant, challenge is understanding the selection effects of this new survey strategy. This thesis serves to demonstrate the efficacy of these photometric samples.
Simultaneously, as our statistical constraints improve, a higher burden is placed on other systematic uncertainties, like a better understanding of the environment that SNe occur in. Dust attenuates and reddens SNIa light curves, obscuring the true properties and astrophysical origins of the SNIa explosion. Here I combine the results of my four first-author papers in non-chronological order, laying out the steps I took to perform a cosmology analysis from start to finish. In Figure \ref{fig:roadmap}, I provide a general overview and outline of the course of this thesis, and how my papers aid in answering these questions. My first question is \textit{how do we observe the universe?} I go over the surveys and experiments that have been used to peer back billions of years into cosmic history. I also discuss how our imperfect instruments and selection effects all impact our observations, alongside how non-cosmological effects make these observations even more challenging, and how we try to mitigate those issues. To aid our methods of observing the universe, I ask - \textit{how do we simulate the universe?} These simulations are able to create extremely realistic, catalogue level samples that can be tuned to mirror our data in every measurable metric. This question leads to the first published work in this thesis: \textit{The Pantheon+ Analysis: Forward-Modeling the Dust and Intrinsic Colour Distributions of Type Ia Supernovae, and Quantifying their Impact on Cosmological Inferences}. The specific characteristics and modeling of dust distributions are drawn from the data using a multi-dimensional Markov Chain Monte Carlo method to infer and separate the intrinsic SNIa properties from those caused by external dust effects, informing us as to \textit{how our measurements are biased}.Given our improved simulations, I ask \textit{how do we fix these biases?}. In the next paper, \textit{Improved Treatment of Host-Galaxy Correlations in Cosmological Analyses With Type Ia Supernovae}, I introduce a method to fix these biases using simulations by providing the first phenomenological model of correlating SNIa properties with that of their host galaxy. This framework is used as the basis for a novel set of bias corrections that are able to account for realistic correlations between SNIa properties, as well as separately introducing the first bias corrections methodology to correct dust models of SNIa scatter. In the process of building up to cosmology measurements, I ask \textit{what biases are unique to photometric surveys?}. In \textit{Assessment of the Systematic Uncertainties in the Cosmological Analysis of the SDSS Supernovae Photometric Sample}, I investigate a collection of potential biases and uncertainties that are unique to photometric samples: assessing the impact of mis-associating the host galaxy, modeling of non-Ia contamination, and changing the modeled efficiency of detecting the host galaxies.My last paper puts all of these papers and methods together to answer the question: \textit{What cosmological result do we find?} I create the first-ever joint analysis of two photometric SNIa samples, making the largest SNIa analysis to-date. I test for consistency between the samples with the first comparison of statistically-independent SNIa samples, and show that the results of this joint photometric analysis are competitive with the best spectroscopic SNIa analysis. </p
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
- …
